Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Chemistry Periodic Table
The correct order of decreasing electron gain enthalpy with negative sign for chalcogens is - Identify
1
O > S > Se > Te
2
O < Te < Se < S
3
S > Se > Te > O
4
More than one of the above
5
None of the above